/*

 File: DoPrinting.c

 Abstract: Printing code for Carbon project.

 Version: <1.0>

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*/ 

#include "DoPrinting.h"

#include "AppDrawing.h"

#include "UIHandling.h"

// This code only prints one page.

#define NUMDOCPAGES     1

static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, 

                    PMPrintSettings printSettings, OSType command);

// -----------------------------------------------------------------------

PMPageFormat CreateDefaultPageFormat(void)

{

    OSStatus err = noErr, tempErr;

    PMPageFormat pageFormat = NULL;

    PMPrintSession printSession;

    err = PMCreateSession(&printSession);

    if(!err){

    err = PMCreatePageFormat(&pageFormat);

    if(err == noErr)

        err = PMSessionDefaultPageFormat(printSession, pageFormat);

    tempErr = PMRelease(printSession);

    if(!err)err = tempErr;

    }

    if(err){

    fprintf(stderr, "Got an error = %d creating the default page format\n", err);

    }

    return pageFormat;

}

// -----------------------------------------------------------------

OSStatus DoPageSetup(PMPageFormat pageFormat)

{

    OSStatus        err = noErr;

    PMPrintSession printSession;

    err = PMCreateSession(&printSession);

    if(!err){

    Boolean accepted;

    if(!err) // Validate the page format we're going to pass to the dialog code.

        err = PMSessionValidatePageFormat(printSession, pageFormat, kPMDontWantBoolean);

    if(!err){

        err = PMSessionPageSetupDialog(printSession, pageFormat, &accepted);

    }

    (void)PMRelease(printSession);

    }

    if(err && err != kPMCancel)

    fprintf(stderr, "Got an error %d in Page Setup\n", err);

    return err;

} // DoPageSetup

// -------------------------------------------------------------------------------

OSStatus DoPrint(PMPageFormat pageFormat, OSType drawingCommand)

{

    OSStatus err = noErr;

    UInt32 minPage = 1, maxPage = NUMDOCPAGES;  // One page document printing.

    PMPrintSession printSession;

    err = PMCreateSession(&printSession);

    if(err == noErr){

    err = PMSessionValidatePageFormat(printSession, pageFormat, kPMDontWantBoolean);

        if (err == noErr)

        {

        PMPrintSettings printSettings = NULL;

            err = PMCreatePrintSettings(&printSettings);

            if(err == noErr)

                err = PMSessionDefaultPrintSettings(printSession, printSettings);

            if (err == noErr)

        err = PMSetPageRange(printSettings, minPage, maxPage);

            if (err == noErr)

            {

                Boolean accepted;

        err = PMSessionPrintDialog(printSession, printSettings, pageFormat, &accepted);

        if(!err && accepted){

            err = MyDoPrintLoop(printSession, pageFormat, printSettings, drawingCommand);

        }

            }

        if(printSettings)

        (void)PMRelease(printSettings);

        }

        (void)PMRelease(printSession); 

    }

    if(err && err != kPMCancel)

    fprintf(stderr, "Got an error %d in DoPrint!\n", err);

    return err;

}

// --------------------------------------------------------------------------------------

static OSStatus MyDoPrintLoop(PMPrintSession printSession, PMPageFormat pageFormat, 

                    PMPrintSettings printSettings, OSType drawingType)

{

    OSStatus err = noErr;

    OSStatus tempErr = noErr;

    UInt32 firstPage, lastPage, totalDocPages = NUMDOCPAGES;    // Only print 1 page.

    if(!err)

    err = PMGetFirstPage(printSettings, &firstPage);

    if (!err)

        err = PMGetLastPage(printSettings, &lastPage);

    if(!err && lastPage > totalDocPages){

        // Don't draw more than the number of pages in our document.

        lastPage = totalDocPages;

    }

    // Tell the printing system the number of pages we are going to print.

    if (!err)       

        err = PMSetLastPage(printSettings, lastPage, false);

    if (!err)

    {

        err = PMSessionBeginCGDocument(printSession, printSettings, pageFormat);

        if (!err){

        UInt32 pageNumber = firstPage;

        // Need to check errors from our print loop and errors from the session each

        // time around our print loop before calling our BeginPageProc.

            while(pageNumber <= lastPage && err == noErr && PMSessionError(printSession) == noErr)

            {

                err = PMSessionBeginPage(printSession, pageFormat, NULL);

                if (!err){

                    CGContextRef printingContext = NULL;

                    // Get the printing CGContext to draw to.

                    err = PMSessionGetCGGraphicsContext(printSession, &printingContext);

                    if(!err){

            myDispatchDrawing(printingContext, drawingType);

                    }

                    // We must call EndPage if BeginPage returned noErr.

            tempErr = PMSessionEndPage(printSession);

            if(!err)err = tempErr;

                }

        pageNumber++;

            }   // End of while loop.

            // We must call EndDocument if BeginDocument returned noErr.

        tempErr = PMSessionEndDocument(printSession);

        if(!err)err = tempErr;

        if(!err)

        err = PMSessionError(printSession);

        }

    }

    return err;

}